To prevent this from happening, follow these steps to set up your computer to not power down when the laptop lid is shut. This will let you continue to use the other monitor. Open Control Panel ...

If your computer monitor keeps entering ... that you can use to enable or disable power save mode, control brightness and contrast, etc. If your monitor has those options, you are advised to ...

The power save feature on your computer automatically switches off the monitor when the computer hasn't been used for a set period of time, saving energy bills and preventing a condition known as ...

Setting up an external monitor is straightforward -- you hook it up to a power source and connect it to your laptop or desktop over HDMI or DisplayPort. This works well if you often dock your ...